Answer:
Soil Erosion
Explanation:
Basically, tillage breaks soil up, destroying its overall structure. It encourages surface runoff and therefore soil erodes more easily. In some cases soil erosion is beneficial, but in most cases, it is not. Tillage has also been found to cause the emissions of more toxic gases such as N20.
Answer:
B. it expands and shrinks in the soil
Answer:
C. They are made from many carbon atoms
Explanation:
The Outer core is liquid and moving.
Earth's core is composed of Iron and Nickel.